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No exploitation reportedFix available

CVE-2025-43715

No exploitation reported by the sources we read.

  • Published2025-04-17
  • WeaknessCWE-754

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Nullsoft Scriptable Install System (NSIS) before 3.11 on Windows allows local users to escalate privileges to SYSTEM during an installation, because the temporary plugins directory is created under %WINDIR%\temp and unprivileged users can place a crafted executable file by winning a race condition. This occurs because EW_CREATEDIR does not always set the CreateRestrictedDirectory error flag.

Timeline

dates in UTC
  1. 2025-04-1703:15CVE publishedNVD

Versions per branch

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Nullsoft Scriptable Install Systemother versions: not affected
    Affected
    • < 3.11fixed in 3.11custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-04-17

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • nsisUbuntu:Pro:14.04:LTSall versions · no fixed version listed
  • nsisUbuntu:26.10all versions · no fixed version listed
  • nsisUbuntu:26.04:LTSall versions · no fixed version listed
  • nsisUbuntu:25.10all versions · no fixed version listed
  • nsisUbuntu:24.04:LTSall versions · no fixed version listed
  • nsisUbuntu:22.04:LTSall versions · no fixed version listed
  • nsisUbuntu:20.04:LTSall versions · no fixed version listed
  • nsisUbuntu:18.04:LTSall versions · no fixed version listed

4 more package ranges on OSV.dev

Vendor advisories

  • ICSA-25-254-01 CISA5 known affected

    Siemens SIMOTION Tools

    SIMATIC Technology Package TPCamGen (6ES7823-0FE30-1AA0) · SIMOTION OA MIIF (6AU1820-3DA20-0AB0) · SIMOTION OACAMGEN (6AU1820-3EA20-0AB0) · +2 more

Full record on NVD

Fix

  1. Mitigation from the vendor CISA ICSA-25-254-01 · 5 productsEnsure that no other users are logged in and that no unknown programs are running before starting the installation of the affected products
  2. No fix available, says the vendor CISA ICSA-25-254-01 · 1 productCurrently no fix is available
  3. No fix planned, says the vendor CISA ICSA-25-254-01 · 4 productsCurrently no fix is planned

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2025-04-17
Last Modified
2026-10-15
NVD status
Deferred
GitHub Advisory
GHSA-g9m2-7jc6-pmvf

Frequently asked questions

What is CVE-2025-43715?

Nullsoft Scriptable Install System (NSIS) before 3.11 on Windows allows local users to escalate privileges to SYSTEM during an installation, because the temporary plugins directory is created under %WINDIR%\temp and unprivileged users can place a crafted executable file by winning a race condition. This occurs because EW_CREATEDIR does not always set the CreateRestrictedDirectory error flag.

Is CVE-2025-43715 actively exploited?

Active exploitation of CVE-2025-43715 has not been confirmed. Its EPSS score was 0.3% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-43715?

CVE-2025-43715 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

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